edgard, overall, your excellent, but in this thread, you just posted something below average. i noticed the email thing while browsing from my mobile but didn't give a damn about it.

Don't you see the security risk imposed by this?!
This unmasked email is equivalent to the password in this case and it is easy to manage to get it or trick a user to give it to you so obviously, the security risk vector increased.
The only thing that is needed is to find a relation between the Facebook id and this email. I know this is a hard task, but if done by someone, it will mean that someday you might see all the people on Facebook putting the same status (1), it will be a mass attack!

@xcoder, yeah sure it is not easy at all, and they might be using time stamp functions which helps in generating highly random output.
But anyway, nothing is 100% secure. Keep in mind that the email output is some known words + numbers which means that the word part is based on a certain dictionary... khalas boukra lamma 2ekteshefa b2elkon kif